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数字高清晰度电视的研究已经过几十年的摸索和发展,技术已从试验室阶段进入实用阶段,播放形式也从最初的模拟方式向数字方式转变,日本、美国、欧洲对高清晰度电视采用何种制式的争论,在客观上延误了统一数字电视传输格式的形成,这无疑给我国数字电视的发展提供了一个前所未有的发展机遇。由于数字高清晰度电视的发展将带来巨大的经济利益和政治利益,所以当前美国、日本、欧洲等西方各国均制定出相应的时间表以加快推广进程,美国40余家电视台从1998年11月开始开播数字节目,政府计划所有电视台于2002年5月前播放数字节目,模拟节目将于2006年停播;英国于1998年9月21日首先开播
Digital high-definition television research has been groping and development for decades, technology has entered the practical stage from the laboratory stage, the playback mode from the initial analog to digital conversion, Japan, the United States, Europe on the high-definition television What kind of standard controversy has objectively delayed the formation of a unified digital television transmission format, which undoubtedly provides an unprecedented opportunity for the development of digital television in our country. As the development of digital HDTV will bring tremendous economic and political benefits, all the western countries such as the United States, Japan and Europe have formulated corresponding timetables to speed up the promotion process. More than 40 U.S. television stations from 1998 to 1998, Month began broadcasting digital programs, the government plans to all television stations in May 2002 broadcast digital programs, simulations will be suspended in 2006; the United Kingdom on September 21, 1998 first broadcast